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iOS Developer Interview Questions

What steps would you follow to make a network request?

Suggested approach: There are so many ways of answering this (not least “use Alamofire”), but the main thing is to demonstrate that you know it needs to be asynchronous to avoid blocking the main thread. Don't forget to mention the need to push work back to the main thread when it's time to update the user interface.

For bonus points, mention that this is the kind of work Combine just eats up.

  Estimated difficulty: Easy

Important notes

  • There are over 150 interview questions in the system. Once you've read the question and come up with a suitable answer, try reading my suggested approach and see if it helps you add more detail.
  • These questions are not designed to be hard; a good interviewer is more interested in generating discussion that lets your ability and interests shine through.
  • If you answer a question with "yes" or "no" you've missed the point – interviewers prefer you to provide reasoning, explanation, or detail, so try to elaborate with examples!
  • If you're looking for detailed technical questions about the language, you should try my Swift tests instead – there are multiple challenges that will work your brain hard.
  • For a whole series of coding challenges, I wrote the perfect book for you: Swift Coding Challenges.

Related questions

See the full list of iOS interview questions

 
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